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EWG's Tap Water Database — 2019 UPDATE

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Chlordane

Holliston Water Department

The cancer-causing pesticide chlordane was banned in 1988. Chlordane is persistent and accumulates in the body. It is still found in the environment and in the bodies of adults and newborn babies.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND60ND
2014N/A00N/A
2015N/A00N/A
2016ND70ND
2017ND10ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.03 ppb

The EWG Health Guideline of 0.03 ppb for chlordane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL) 2 ppb

The legal limit for chlordane, established in 1991, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer due to chlordane exposure.

ppb = parts per billion

All test results

Date Result
2012-04-23ND
2012-12-19ND
2013-05-22ND
2013-05-22ND
2013-05-22ND
2013-12-11ND
2013-12-11ND
2013-12-11ND
2016-05-03ND
2016-05-03ND
2016-05-10ND
2016-05-10ND
2016-12-05ND
2016-12-05ND
2016-12-05ND
2017-01-10ND